WIT Worth Quick Return Mechanism

Range of Experiments

1. Study the Wit Worth Quick Return Mechanism.
2. Demonstrate the working principle of the quick return mechanism.
3. Study the relationship between forward stroke and return stroke.
4. Determine the quick return ratio.
5. Calculate the time ratio of cutting stroke to return stroke.
6. Study the effect of crank position on quick return ratio.
7. Measure the angles turned by the crank during forward and return strokes.
8. Compare the theoretical and experimental quick return ratio.
9. Study the uniformity of speed during forward and return strokes.
10. Study the velocity of the sliding block.
11. Draw/construct the velocity diagram of the mechanism.
12. Demonstrate the conversion of rotary motion into reciprocating motion.

Specifications

WIT WORTH QUICK RETURN MECHANISM, working demonstration model consisting of a hand-operated crank, pulley and belt arrangement, connecting rod, sliding block and horizontal guideway mounted on a rigid metal panel. The model shall demonstrate rotary-to-reciprocating motion, unequal forward and return stroke times and determination of quick return ratio. Suitable for Theory of Machines/Kinematics laboratory experiments and complete with all necessary components.